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Harcourt Brace Jovanovich College, 1991
Buku Teks
Bettelheim, Frederick A.
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Buku Teks
Henrickson, Charles
McGraw Hil , 2011
Buku Teks
Landesberg, Joseph M., 1903-1994
Brooks/Cole Cengage Learning, 2012
Buku Teks
Timberlake, Karen C.
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Buku Teks